Considering the requirements of provincial public meteorological service system, combined with the existing meteorological service products and information networks in Sichuan Province，the overall architecture design of provincial public weather services system is proposed, which uses the advanced network service technology, including the integration of provinceprefecturecounty basic service products, the production of the specialised products, the classification of clients, and so on. This system aims to enhance this design as a universal model across China and provides a reference for this industry by means of the construction and application of public meteorological service system in Sichuan Province. The system has put to use in June 2013, and the application indicates that it has high efficiency, relability, utilization efficiency, and practicality. The model of the meteorological service system is applied in Yunnan Meteorological Service.